It is an opinion often ventured that Heidegger, having opened very briefly – in Being and Time – the question of birth, fails to properly engage the matter. It is said that, despite the thinking of historicity initiated there, and the occasional reference in later writings, the question of the natal is not properly addressed in his work. Instead, we are told, it is Hannah Arendt who picks up this neglected thread, turning it into a cornerstone of her thinking. This paper seeks to show that this story is inaccurate: that the development of a conception of ‘Anfang’ in the texts of the late 1930’s can be seen to address in a decisive manner the question of what will be called ‘natality.’ Aspects of the texts from this period, and in particular of the volume Über den Anfang (GA 70) can be read so as to reveal a rich and complex response to this problem, one that reverses many presuppositions regarding Heidegger’s work at this time, and more than filling this apparent lacuna.